The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 24UW27 # Created Sat Jan 24 02:12:24 2026 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 17.08d # First observation: 2024/10/27 # Last observation: 2024/11/13 Preliminary a, adot, b, bdot, g, gdot: 0.000007 0.184132 -0.000005 0.102883 0.100895 0.000000 # Chi-squared of fit: 45.25 DOF: 52 RMS: 0.22 # Min/Max residuals: -0.67 0.85 # Exact a, adot, b, bdot, g, gdot: 2.679074E-05 1.625231E-01 1.575003E-05 1.026810E-01 9.702732E-02 -7.648738E-02 # Covariance matrix: 1.9500E-13 4.0443E-10 -5.0239E-14 -5.7517E-12 6.6839E-11 6.7865E-10 4.0443E-10 3.3033E-06 -3.3590E-10 -6.3478E-08 5.2996E-07 1.6167E-06 -5.0239E-14 -3.3590E-10 1.4777E-13 2.4478E-12 -5.4261E-11 -2.9034E-10 -5.7517E-12 -6.3478E-08 2.4478E-12 1.5469E-09 -1.0097E-08 -1.0654E-09 6.6839E-11 5.2996E-07 -5.4261E-11 -1.0097E-08 8.5088E-08 2.7946E-07 6.7865E-10 1.6167E-06 -2.9034E-10 -1.0654E-09 2.7946E-07 7.6780E-06 # lat0 lon0 xBary yBary zBary JD0 10.556737 48.950431 0.252525 0.174478 -0.937076 2460610.914424 # Heliocentric elements and errors Epoch: 2460610.5000 = 2024/10/27 Mean Anomaly: 330.06002 +/- 0.874 Argument of Peri: 95.97924 +/- 1.035 Long of Asc Node: 32.85454 +/- 0.163 Inclination: 33.69989 +/- 0.287 Eccentricity: 0.48118914 +/- 0.0150 Semi-Major Axis: 16.06611361 +/- 0.2854 Time of Perihelion: 2462566.7018 +/- 23.4 Perihelion: 8.33527426 +/- 0.2826 Aphelion: 23.79695296 +/- 0.4865 Period (y) 64.3983 +/- 1.72 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 7.47612381 +/- 0.0200 Ecliptic Y 8.19871093 +/- 0.0230 Ecliptic Z 1.88835062 +/- 0.0057 Ecliptic XDOT -0.00520725 +/- 0.0000 Ecliptic YDOT 0.00101566 +/- 0.0001 Ecliptic ZDOT 0.00245303 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 11.25509467 +/- 0.0214 Geocenter to KBO 10.30637559 +/- 0.0310 # Hcoef: 12.43
The following table shows the complete astrometric record for 24UW27. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (24UW27) followed by the observatory code and reference code for the source of the astrometry.
2024 10 27.413623 02 53 00.085 +27 34 49.69 22.4G 24UW27 V00 C~8Spj 2024 10 27.419249 02 52 59.981 +27 34 49.55 22.7G 24UW27 V00 C~8Spj 2024 10 27.424862 02 52 59.884 +27 34 49.62 22.5G 24UW27 V00 C~8Spj 2024 10 27.430475 02 52 59.768 +27 34 49.69 22.3G 24UW27 V00 C~8Spj 2024 10 27.488601 02 52 58.640 +27 34 49.50 24UW27 V00 C~8Spj 2024 10 27.494712 02 52 58.520 +27 34 48.80 23.2G 24UW27 V00 C~8Spj 2024 10 27.500952 02 52 58.420 +27 34 48.60 24UW27 V00 C~8Spj 2024 10 27.507143 02 52 58.260 +27 34 49.20 23.6G 24UW27 V00 C~8Spj 2024 10 28.18650 02 52 45.31 +27 34 47.5 23.3G 24UW27 291 C~8Spj 2024 10 28.22088 02 52 44.63 +27 34 47.4 23.3G 24UW27 291 C~8Spj 2024 10 31.358301 02 51 43.650 +27 34 29.03 22.1G 24UW27 V00 C~8Spj 2024 10 31.368661 02 51 43.438 +27 34 28.81 22.2G 24UW27 V00 C~8Spj 2024 10 31.379006 02 51 43.232 +27 34 28.99 22.2G 24UW27 V00 C~8Spj 2024 10 31.389215 02 51 43.031 +27 34 29.17 22.2G 24UW27 V00 C~8Spj 2024 11 01.431381 02 51 22.604 +27 34 19.27 23.4G 24UW27 V00 C~8Spj 2024 11 01.441773 02 51 22.392 +27 34 19.45 22.8G 24UW27 V00 C~8Spj 2024 11 01.462583 02 51 21.974 +27 34 19.27 24UW27 V00 C~8Spj 2024 11 05.38424 02 50 04.61 +27 33 28.3 22.6R 24UW27 291 C~8Spj 2024 11 05.41508 02 50 04.03 +27 33 28.0 24UW27 291 C~8Spj 2024 11 08.28266 02 49 07.19 +27 32 36.8 22.7G 24UW27 695 C~8Spj 2024 11 08.29785 02 49 06.88 +27 32 36.6 24UW27 695 C~8Spj 2024 11 08.31303 02 49 06.58 +27 32 36.1 23.0G 24UW27 695 C~8Spj 2024 11 09.19551 02 48 49.19 +27 32 18.1 22.2R 24UW27 291 C~8Spj 2024 11 09.21575 02 48 48.69 +27 32 18.1 22.5R 24UW27 291 C~8Spj 2024 11 10.17928 02 48 29.63 +27 31 56.9 22.8G 24UW27 695 C~8Spj 2024 11 10.19025 02 48 29.39 +27 31 56.9 22.3G 24UW27 695 C~8Spj 2024 11 10.20122 02 48 29.18 +27 31 56.7 22.2G 24UW27 695 C~8Spj 2024 11 13.47350 02 47 24.46 +27 30 36.9 22.4G 24UW27 695 C~8Spj 2024 11 13.49546 02 47 24.01 +27 30 36.8 22.2G 24UW27 695 C~8Spj
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 -0.06 0.00 0.20
2 0.0000 -1.36 -0.03 0.27 0.06
3 0.0000 -2.57 0.15 0.72 0.10
4 0.0000 -4.03 0.10 1.24 0.21
5 0.0002 -18.41 0.12 5.48 0.22
6 0.0002 -20.15 -0.10 5.28 -0.42
7 0.0002 -21.47 0.11 5.48 -0.67
8 0.0003 -23.33 -0.22 6.68 0.09
9 0.0021 -188.35 0.12 55.85 0.04
10 0.0022 -197.01 -0.01 58.42 0.04
11 0.0108 -976.86 -0.05 281.03 -0.17
12 0.0108 -979.62 -0.17 281.65 -0.27
13 0.0109 -982.18 -0.09 282.64 -0.00
14 0.0109 -984.68 0.01 283.61 0.25
15 0.0137 -1246.93 -0.01 354.96 -0.07
16 0.0138 -1249.57 0.01 355.98 0.24
17 0.0138 -1254.93 -0.03 357.46 0.31
18 0.0246 -2251.89 -0.24 616.55 -0.02
19 0.0246 -2259.34 0.33 618.58 0.04
20 0.0325 -2995.69 -0.09 797.54 -0.08
21 0.0325 -2999.68 -0.10 798.60 0.03
22 0.0326 -3003.63 -0.08 799.33 -0.19
23 0.0350 -3229.59 0.85 852.15 -0.45
24 0.0351 -3235.93 -0.20 854.16 0.31
25 0.0377 -3484.01 0.02 910.81 -0.15
26 0.0377 -3487.06 -0.16 911.78 0.15
27 0.0377 -3489.78 -0.02 912.44 0.14
28 0.0467 -4334.47 -0.05 1098.62 -0.25
29 0.0468 -4340.20 -0.09 1100.35 0.31
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
24UW27 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 15.944 18.008 14.482 ecceobj 0.478 0.389 0.574 incobj 33.719 32.552 35.468 qmin 8.217 10.940 4.905 qmax 26.486 25.158 760.150 amean 16.177 17.992 105.182 amin 15.481 17.743 12.796 amax 17.767 18.128 382.976 emean 0.465 0.378 0.893 emin 0.445 0.349 0.541 emax 0.491 0.392 0.987 imean 34.189 32.496 32.269 imin 33.272 31.987 29.287 imax 34.765 33.657 35.530 excite_mean 0.729 0.657 1.043 fracstop 0.002 0.004 0.037 cjmean 2.929 2.871 1.577 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 112.1 99.4 202.8 kozaiamp 16.2 22.0 58.5